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Gap solitons of a superfluid fermion gas in optical lattices

Yang Shu-Rong Cai Hong-Qiang Qi Wei Xue Ju-Kui

Gap solitons of a superfluid fermion gas in optical lattices

Yang Shu-Rong, Cai Hong-Qiang, Qi Wei, Xue Ju-Kui
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Publishing process
  • Received Date:  19 September 2010
  • Accepted Date:  03 November 2010
  • Published Online:  05 March 2011

Gap solitons of a superfluid fermion gas in optical lattices

  • 1. Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China

Abstract: Based on the hydrodynamic model, gap soliton of a superfluid fermion gas in optical lattices was discussed. By using the variational method, the condition for existing gap soliton is obtained. It is found that, when the system crosses from Bose-Eingtein condensation side to the BCS side, the condition for existing gap soliton and the structure of gap soliton are very different.

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